Slab for building



FIG. 1 is a top frontal perspective view of a slab for building showing the top, front, and right sides of the design;

FIG. 2 is a top rear perspective view showing the top, rear, and left sides of the design of FIG. 1; and,

FIG. 3 is a bottom frontal perspective view showing the bottom, front, and left sides of the design of FIG. 1. 

CLAIM We claim the ornamental design for a slab for building, as shown. 